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Identification of neural circuits underlying P300 abnormalities in schizophrenia

Identification of neural circuits underlying P300 abnormalities in schizophrenia Event‐related potentials (ERPs) provide a noninvasive method to evaluate neural activation and cognitive processes in schizophrenia. The pathophysiological significance of these findings would be greatly enhanced if scalp‐recorded ERP abnormalities could be related to specific neural circuits and/or regions of the brain. Using quantitative approaches in which scalp‐recorded ERP components are correlated with underlying neuroanatomy in schizophrenia, we focused on biophysical and statistical procedures (partial least squares) to relate the auditory P300 component to anatomic measures obtained from quantitative magnetic resonance imaging. These findings are consistent with other evidence that temporal lobe structures contribute to the generation of the scalp‐recorded P300 component and that P300 amplitude asymmetry over temporal recording sites on the scalp may reflect anatomic asymmetries in the volume of the superior temporal gyrus in schizophrenia. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychophysiology Wiley

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References (100)

Publisher
Wiley
Copyright
Copyright © 1999 Wiley Subscription Services
ISSN
0048-5772
eISSN
1469-8986
DOI
10.1017/S0048577299971688
Publisher site
See Article on Publisher Site

Abstract

Event‐related potentials (ERPs) provide a noninvasive method to evaluate neural activation and cognitive processes in schizophrenia. The pathophysiological significance of these findings would be greatly enhanced if scalp‐recorded ERP abnormalities could be related to specific neural circuits and/or regions of the brain. Using quantitative approaches in which scalp‐recorded ERP components are correlated with underlying neuroanatomy in schizophrenia, we focused on biophysical and statistical procedures (partial least squares) to relate the auditory P300 component to anatomic measures obtained from quantitative magnetic resonance imaging. These findings are consistent with other evidence that temporal lobe structures contribute to the generation of the scalp‐recorded P300 component and that P300 amplitude asymmetry over temporal recording sites on the scalp may reflect anatomic asymmetries in the volume of the superior temporal gyrus in schizophrenia.

Journal

PsychophysiologyWiley

Published: Jan 1, 1999

Keywords: ; ; ; ;

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